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Benchmark of quasi-linear models against gyrokinetic single scale simulations in deuterium and tritium plasmas for a JET high beta hybrid discharge

A. Mariani, P. Mantica, I. Casiraghi, J. Citrin, T. Görler, G.M. Staebler, EUROfusion JET1 contributors2021年被引用 8Nuclear FusionIF 3出版社

A benchmark of the reduced quasi-linear models QuaLiKiz and TGLF with GENE gyrokinetic simulations has been performed for parameters corresponding to a JET high performance hybrid pulse in deuterium. Given the importance of the study of such advanced scenarios in view of ITER and DEMO operations, the dependence of the transport on the ion isotope mass has also been assessed, by repeating the benchmark changing the ion isotope to tritium. TGLF agrees better with GENE on the linear spectra and the flux levels. However, concerning the isotope dependence, only QuaLiKiz reproduces the GENE radial trend of a basically gyro-Bohm (gB) scaling at inner radii and instead anti-gB at outer radii. The physics effects which are responsible of the antigB effect in GENE simulations have been singled out.

日本語訳

準線形簡約モデルであるQuaLiKizおよびTGLFと、GENEジャイロ運動論シミュレーションとのベンチマークを、重水素におけるJET高性能ハイブリッドパルスに対応するパラメータに対して実施した。ITERおよびDEMO運転を見据えたこのような先進シナリオの研究の重要性を踏まえ、イオン同位体質量に対する輸送の依存性についても、イオン同位体をトリチウムに変更してベンチマークを繰り返すことにより評価した。TGLFは、線形スペクトルおよびフラックスレベルにおいてGENEとより良く一致する。しかし、同位体依存性に関しては、QuaLiKizのみが、内側半径における基本的にジャイロボーム(gB)スケーリング、外側半径における反gBスケーリングというGENEの動径傾向を再現する。GENEシミュレーションにおいて反gB効果をもたらす物理的効果が特定された。

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jet高精度(タイトル一致)iter中精度(概要文一致)

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JETTritiumDeuteriumGyrokinetic
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